laundry concepts

The micro-Laundry project has stopped and is currently being cleared. I was shocked when the founder Xiaofeng confirmed the message with me. Just a few weeks ago, I also called Xiao Feng to talk about financing. Later, I visited Rongchang e bag washing and wrote an article "What does o2o bring to the traditional laundry industry" in combination with micro-Laundry

Transferred from: a q's home 1. Basic concepts of osworkflowIn the commercial and open-source world, osworkflow is different from these existing workflow systems. The biggest difference is that osworkflow has excellent flexibility. It may be difficult to get started with osworkflow (some people say it is not suitable for beginners of workflow). For example, osworkflow does not require graphical tools to develop workflows, but it is recommended to manu

Principles of database systems (I)-basic concepts of database systems and concepts of Database Systems Concept Model: (1) express the overall logical structure of the data, which is a comprehensive description of the data involved in the entire application project by the System user. (Overall) (2) modeling data from the perspective of user needs. (Viewpoint) (3) independent from hardware and software. (In

Fundamental Concepts Introduction to the basic concepts in the system (although it is possible to run programs on a computer without a kernel, the presence of a kernel greatly t He writing and with the other programs, and increases, and flexibility available to programmers. The Linux executable kernel is below/boot/vmlinuz. (a) kernel's mission 1. Process Scheduling 2. Memory Management 3. Provision of a fi

Object-oriented basics: basic concepts and basic concepts What Is Object-Oriented? It is a programming method, a way of thinking, not a programming language, used to compare object-oriented with the real world. The core objective is to reduce the amount of code duplication. How to Learn object-oriented? 1. Grasp the syntax of an object-oriented language, such as java 2. Understand the object-oriented w

Basic concepts of Android databases (I) and basic concepts of android 1. Introduction to the Android Database Android uses the SQLite database and Content Provider in combination to provide the persistent function of structured data. SQLite databases can store application data in a structured and easy-to-manage way. Android provides a complete library file for SQLite relational databases. Each application c

Basic concepts and Management of LVM and basic concepts Management of lvm I. Problems with traditional disk management When the partition size is insufficient, it cannot be expanded. You can only add a disk or create a new partition to expand the space. However, the newly added hard disk exists as an independent file system, the original file system is not extended, and upper-layer applications can only acc

Basic concepts of UML [dependency, association, generalization, implementation] and basic concepts of umlI. concept: Introduction to the basic concepts of UML: UML: UML (Unified Modeling Language) provides a Unified, standard, and visual Modeling Language for Object-Oriented software design. It is applicable to the whole process of describing case-driven, archite

Data Structure Learning notes (I) Basic concepts and analysis algorithms and basic concepts of Algorithms The efficiency of the solution is related:Data Organization (bookshelves)Space Utilization (recursion and non-recursion)Algorithm used to solve the problem What is an algorithm: a data object must be associated with a series of operations added to it, and the method used to complete these operations is

Introduction to basic concepts of Python and basic concepts of python 1. Introduction to Python 1.1 advantages of Python Python is an interpreted, object-oriented, and advanced programming language with dynamic semantics; Simple, easy to learn, free of charge; High-level Language: when writing a program in Python, you do not need to consider the underlying details such as how to manage the memory used by yo

Programming Concepts and Programming Concepts (Personal understanding) Object Oriented Programming (OOP) is mainly embodied in encapsulation, inheritance, polymorphism, and virtual functions; Encapsulation: Put the specific method to implement the function into a class. The caller does not need to know how to implement the function. Instead, the caller only needs to know what function it can implement, w

PLSQL_Database Link basic concepts and usage (concepts), plsql_databaselink 2014-06-08 BaoXinjian I. Summary 1. How to Establish a database connection 2. Query Method 3. Connection Type 4. Common queries Ii. Detailed Analysis 1.How to Establish a database connection (1). Use tns for Creation Create database link linkname Connect to user_name identified by password USING tns_dbname (2) directly establish

or more keywords and value types, usually (but not always) separated by a single space. the allowed properties and their possible values are discussed in chapters 4th through 6. There is only one attribute in each declaration. allows the declaration block to be null, in which case the element that the selector matches will not apply to this rule. This is functionally equivalent to not writing rules. CSS does not need to write a semicolon after the last declaration of a block, but some early C

-before, Cue-afterfont font-family, font-size, Font-style, Font-weight, Font-variant,line-height (Font-size-adjust and Font-stretch will be added later)Order: font-style | font-variant | font-weight | font-size | line-height | font-family List-style list-style-image, list-style-position, List-style-typemargin Margin-top, Margin-right, Margin-bottom, Margin-leftoutline Outline-color, Outline-style, Outline-widthpadding padding-top, padding-right, Padding-bottom, Padding-leftpause Pause-after, Pau

parallelize.Improving the classification accuracy of class imbalance data The traditional classification algorithm is designed to minimize the error of classification. They assume that the cost of false positive and pseudo negative cases is equal. Therefore, the traditional classification algorithm is not suitable for class imbalance data. Other methods: 1, oversampling (does not involve changes in the structure of the classification model, change the distribution of the tuple

Sort out the delegate concepts and the delegate concepts I. Preface The project size may be small. In addition to adding, deleting, modifying, and querying the project, only the business processes are left. What has not been figured out before is blurred after a long time... II. Application scenarios MSDN: delegate is a reference type that can be used to encapsulate naming or anonymous methods. The dele

Combing thread management concepts in Java and java thread concepts In Java, "Thread" refers to java. lang. the Thread pool is ThreadPoolExecutor and ScheduledThreadPoolExecutor. A Thread pool with a fixed Thread ceiling should be used. When static methods are modified with synchronized, the calls of any two different threads are mutually exclusive. When modifying a member function, the multi-thread method

Some basic concepts and basic concepts of Innovation 1. With or without caching System calls do not contain cache. If you use it to write programs, you need to set the cache for the programmer. database functions do not need to be cached. 2. Three-byte streams The program automatically opens three byte streams during execution, including standard input, standard input, and standard error. 3. standard o

Linux-basic concepts of file systems and linux-basic concepts of Files In linux, all data is stored in a file and stored in a directory with a tree structure. (1) file type 1. Common files Including text files, source code files, and executable files. Linux does not distinguish between text and binary files. 2. Directory Similar to the directory folder in windows. 3. Device Files Character Device Files: Fil

Web-related concepts and web concepts 1. In Web development, we may look at these things: (1) HTML: The Web uses Hypertext Technology HTML to express information and establish links between information and information. (Many nice pages are made of html + css) (2) URL: The Web uses the unified resource positioning technology URL to precisely locate information on the network. (This is important in Web